<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8" />
  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
  <title>Document</title>
  <link rel="stylesheet" href="	https://cdn.jsdelivr.net/npm/bootstrap@5.3.0-alpha1/dist/css/bootstrap.min.css" />

  <style>
    .red {
      color: red;
    }
  </style>
</head>

<body>
  <div id="app">
    <div class="container">
      <!-- 顶部搜索框模块 -->
      <div class="form-group">
        <div class="input-group">
          <h4>品牌管理</h4>
        </div>
      </div>

      <!-- 数据表格 -->
      <table class="table table-bordered table-hover mt-2">
        <thead>
          <tr>
            <th>编号</th>
            <th>资产名称</th>
            <th>价格</th>
            <th>创建时间</th>
            <th>操作</th>
          </tr>
        </thead>
        <tbody>
          <tr v-for="(inex,id) in list" :key="inex.id">
            <td>{{inex.id}}</td>
            <td>{{inex.name}}</td>

            <!-- 如果价格超过100，就有red这个类 -->
            <td class="red" v-if="inex.price>100">{{inex.price}}</td>
            <td v-else>{{inex.price}}</td>
            <td>{{inex.time}}</td>
            <td><a href="#" @click="txt02(inex.id)">删除</a></td>

          </tr>
          <tr style="background-color: #eee">
            <td>统计:</td>
            <td colspan="2">总价钱为: {{zongjia}}</td>
            <td colspan="2">平均价: {{pinjui}}</td>
          </tr>
        </tbody>
        <tfoot>
          <tr>
            <td colspan="5" style="text-align: center" v-if="list.length===0">暂无数据</td>
          </tr>
        </tfoot>
      </table>

      <!-- 添加资产 -->
      <form class="form-inline">
        <div class="form-group">
          <div class="input-group">
            <input type="text" class="form-control" placeholder="资产名称" v-model="name" />
          </div>
        </div>
        &nbsp;&nbsp;&nbsp;&nbsp;
        <div class="form-group">
          <div class="input-group">
            <input type="text" class="form-control" placeholder="价格" v-model="price" />
          </div>
        </div>
        &nbsp;&nbsp;&nbsp;&nbsp;
        <!-- 阻止表单提交 -->


        <button class="btn btn-primary" @click="txt01">添加资产</button>
      </form>
    </div>
  </div>
  <script src="../vue.js"></script>
  <script>
    const app = new Vue({
      el: "#app",
      //定义属性
      data: {
        name: "", // 名称
        price: 0, // 价格
        list: [
          { id: 100, name: "外套", price: 199, time: new Date("2010-08-12") },
          { id: 101, name: "裤子", price: 34, time: new Date("2013-09-01") },
          { id: 102, name: "鞋", price: 25.4, time: new Date("2018-11-22") },
          {
            id: 103,
            name: "头发",
            price: 19900,
            time: new Date("2020-12-12"),
          },
        ],
        zongjia: 0,
        pinjui: 0,
      },
      //定义方法
      methods: {
        txt01() {
          this.list.push({
            id: Math.floor(Math.random() * 1000),
            name: this.name,
            price: this.price,
            time: new Date(),
          })
        },
        txt02(id) {
          this.list.splice(this.list.findIndex(inex => inex.id === id), 1)
        }
      },
      watch: {
        list: {
          deep: true,
          immediate: true,
          handler(newValue) {
            this.zongjia = this.list.reduce(function (pre, inex) {
              return pre + inex.price
            }, 0)
            this.pinjui = this.zongjia / this.list.length
          }
        }
      }
    });
  </script>
</body>

</html>